{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:7JYHWE7K4VD452GLCYITCWYSSP","short_pith_number":"pith:7JYHWE7K","canonical_record":{"source":{"id":"2506.13875","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-16T18:00:12Z","cross_cats_sorted":["astro-ph.HE","physics.comp-ph"],"title_canon_sha256":"5547d02e40edef86889e7a7448d25c01dc7fb45b7d68de3710b300cb2f83bd73","abstract_canon_sha256":"1c97ce2eded4dc2f3eaa398eadcf0a57350d4a464ba2d35183c4e777b83b6c07"},"schema_version":"1.0"},"canonical_sha256":"fa707b13eae547cee8cb1611315b1293f95580bd5eeaac172858c35f6f90abbc","source":{"kind":"arxiv","id":"2506.13875","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.13875","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"arxiv_version","alias_value":"2506.13875v1","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.13875","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_12","alias_value":"7JYHWE7K4VD4","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_16","alias_value":"7JYHWE7K4VD452GL","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_8","alias_value":"7JYHWE7K","created_at":"2026-07-05T11:22:45Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:7JYHWE7K4VD452GLCYITCWYSSP","target":"record","payload":{"canonical_record":{"source":{"id":"2506.13875","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-16T18:00:12Z","cross_cats_sorted":["astro-ph.HE","physics.comp-ph"],"title_canon_sha256":"5547d02e40edef86889e7a7448d25c01dc7fb45b7d68de3710b300cb2f83bd73","abstract_canon_sha256":"1c97ce2eded4dc2f3eaa398eadcf0a57350d4a464ba2d35183c4e777b83b6c07"},"schema_version":"1.0"},"canonical_sha256":"fa707b13eae547cee8cb1611315b1293f95580bd5eeaac172858c35f6f90abbc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:22:45.089416Z","signature_b64":"ptLxuaaoYOpvd37/x2yHxBpiK+7PfCHE2EWPV1sVaqfPWu+1+azTUQEkB4aqy26Of91/7pJESeV5RaW8MUfJDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa707b13eae547cee8cb1611315b1293f95580bd5eeaac172858c35f6f90abbc","last_reissued_at":"2026-07-05T11:22:45.088940Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:22:45.088940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.13875","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:22:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OfG6S2gfpEWeQApw4NtKivMoaHM73bOtF7G6Z52aBhPBrJy3ieCcwNOamTAWUfuEunAJ7cSy45un78sb4RcuCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:54:19.930319Z"},"content_sha256":"0f85d34512080b4c281aded83ba37a56e38b002c403016ac3e81be5ce73dd520","schema_version":"1.0","event_id":"sha256:0f85d34512080b4c281aded83ba37a56e38b002c403016ac3e81be5ce73dd520"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:7JYHWE7K4VD452GLCYITCWYSSP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Deep learning inference with the Event Horizon Telescope II. The Zingularity framework for Bayesian artificial neural networks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.HE","physics.comp-ph"],"primary_cat":"astro-ph.IM","authors_text":"C.-K. Chan, J. Davelaar, M. Janssen, M. Wielgus","submitted_at":"2025-06-16T18:00:12Z","abstract_excerpt":"(abridged) In this second paper in our publication series, we present the open-source Zingularity framework for parameter inference with deep Bayesian artificial neural networks. We carried out out supervised learning with synthetic millimeter very long baseline interferometry observations of the EHT. Our ground-truth models are based on GRMHD simulations of Sgr A* and M87* on horizon scales. We investigated how well Zingularity neural networks are able to infer key model parameters from EHT observations, such as the black hole spin and the magnetic state of the accretion disk, when uncertaint"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.13875","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2506.13875/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:22:45Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U3uMVAwKc2kdywpXTIdgwfasJo8uvP0dpUI+5XojAoxoE/X9roFzjgVEmE4aQh/VlNM3wdIVvLu1NC28rnowDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-08T13:54:19.930901Z"},"content_sha256":"1c2b93a5d0ba1a5b3ae59cd21c69671d85e35a68a1145fa950aae140e8ede62e","schema_version":"1.0","event_id":"sha256:1c2b93a5d0ba1a5b3ae59cd21c69671d85e35a68a1145fa950aae140e8ede62e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7JYHWE7K4VD452GLCYITCWYSSP/bundle.json","state_url":"https://pith.science/pith/7JYHWE7K4VD452GLCYITCWYSSP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7JYHWE7K4VD452GLCYITCWYSSP/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-08T13:54:19Z","links":{"resolver":"https://pith.science/pith/7JYHWE7K4VD452GLCYITCWYSSP","bundle":"https://pith.science/pith/7JYHWE7K4VD452GLCYITCWYSSP/bundle.json","state":"https://pith.science/pith/7JYHWE7K4VD452GLCYITCWYSSP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7JYHWE7K4VD452GLCYITCWYSSP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:7JYHWE7K4VD452GLCYITCWYSSP","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"1c97ce2eded4dc2f3eaa398eadcf0a57350d4a464ba2d35183c4e777b83b6c07","cross_cats_sorted":["astro-ph.HE","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-16T18:00:12Z","title_canon_sha256":"5547d02e40edef86889e7a7448d25c01dc7fb45b7d68de3710b300cb2f83bd73"},"schema_version":"1.0","source":{"id":"2506.13875","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.13875","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"arxiv_version","alias_value":"2506.13875v1","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.13875","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_12","alias_value":"7JYHWE7K4VD4","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_16","alias_value":"7JYHWE7K4VD452GL","created_at":"2026-07-05T11:22:45Z"},{"alias_kind":"pith_short_8","alias_value":"7JYHWE7K","created_at":"2026-07-05T11:22:45Z"}],"graph_snapshots":[{"event_id":"sha256:1c2b93a5d0ba1a5b3ae59cd21c69671d85e35a68a1145fa950aae140e8ede62e","target":"graph","created_at":"2026-07-05T11:22:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.13875/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"(abridged) In this second paper in our publication series, we present the open-source Zingularity framework for parameter inference with deep Bayesian artificial neural networks. We carried out out supervised learning with synthetic millimeter very long baseline interferometry observations of the EHT. Our ground-truth models are based on GRMHD simulations of Sgr A* and M87* on horizon scales. We investigated how well Zingularity neural networks are able to infer key model parameters from EHT observations, such as the black hole spin and the magnetic state of the accretion disk, when uncertaint","authors_text":"C.-K. Chan, J. Davelaar, M. Janssen, M. Wielgus","cross_cats":["astro-ph.HE","physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-16T18:00:12Z","title":"Deep learning inference with the Event Horizon Telescope II. The Zingularity framework for Bayesian artificial neural networks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.13875","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:0f85d34512080b4c281aded83ba37a56e38b002c403016ac3e81be5ce73dd520","target":"record","created_at":"2026-07-05T11:22:45Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"1c97ce2eded4dc2f3eaa398eadcf0a57350d4a464ba2d35183c4e777b83b6c07","cross_cats_sorted":["astro-ph.HE","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.IM","submitted_at":"2025-06-16T18:00:12Z","title_canon_sha256":"5547d02e40edef86889e7a7448d25c01dc7fb45b7d68de3710b300cb2f83bd73"},"schema_version":"1.0","source":{"id":"2506.13875","kind":"arxiv","version":1}},"canonical_sha256":"fa707b13eae547cee8cb1611315b1293f95580bd5eeaac172858c35f6f90abbc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa707b13eae547cee8cb1611315b1293f95580bd5eeaac172858c35f6f90abbc","first_computed_at":"2026-07-05T11:22:45.088940Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:22:45.088940Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ptLxuaaoYOpvd37/x2yHxBpiK+7PfCHE2EWPV1sVaqfPWu+1+azTUQEkB4aqy26Of91/7pJESeV5RaW8MUfJDw==","signature_status":"signed_v1","signed_at":"2026-07-05T11:22:45.089416Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.13875","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0f85d34512080b4c281aded83ba37a56e38b002c403016ac3e81be5ce73dd520","sha256:1c2b93a5d0ba1a5b3ae59cd21c69671d85e35a68a1145fa950aae140e8ede62e"],"state_sha256":"875af32039772bfc5f26c9e6ac2af273c4cca0a94ec9ab6ce94b4adb4e63a4eb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FJ05DelZsK237jMvGGzpn2pCooqXi4c2HnIsuA16Xskg67pqWGBHxoXb33S0UwrAeCjr2mLHPfeKZwvsGEifAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-08T13:54:19.935907Z","bundle_sha256":"91d2f6f7c75a50a6f43e5053b6a81d37305bfd41854026d0982d535961ceb036"}}